Peculiarities of circuitry and application of microelectronic means of analog signal processing are considered: operational amplifiers, multipliers, voltage comparators, analog timers, sampling circuits, analog-to-digital and digital-to-analog converters, single-chip signal collection-processing systems, analog microprocessors produced by domestic industry. Significant attention is paid to digital processing of analog signals using microprocessors. Specific examples of construction of analog-digital systems oriented to software-controlled processing of analog signals in equipment of various functional purpose are described. For engineers involved in the development and use of analog and analog-digital microcircuits.